Thaddeus y



(No Model.)

T. W. BOYLE.

SHOVEL PLOW.

Patented Nov. 6, 1888.

PIC-3.5-

AT "EST r. \Vashingtum UNITED STATES PATENT THADDEUS IV. BOYLE, OF AUGUSTA, GEORGIA.

Sl-lQVEL==PLOW.

SPECIFICATION forming part of Letters Patent No. 392,308, dated November 6, 1888.

Serial No. 265,781. (Xo model.)

To aZZ whom it may concern:

Be it known that I, THADDEUS W. BOYLE, a citizen of the United States of America, residing at Augusta, in the county of Richmond and State of Georgia, have invented certain new and useful Improvements in Shovel- Plows, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to improvements in shovel-plow stocks in which the standard is adj ustably secured to the beam; and the objects of myimprovement are to provide said standard and beam with a plate of peculiar construction to embrace the bolt uniting said parts and prevent its escape and the displacement and change of relative position or the angle made by the standard with the beam. I attain these objects by the construction illustrated in the accompanying drawings, in which Figure l is a perspective view of a plowbeam and standard having their connectingbolt adjustably retained by fluted plate constructed in accordance with my invention. Fig. 2 represents in side view an ordinary fluted plate provided with a fluted cap-plate of the form shown in Fig. 1. Figs. 8, i, 5, and 6 represent in side view modified forms of boltretaining plates constructed in accordance with my invention.

In said drawings A represents the beam of a plow; B, the foot to which a shovel or plowpoint is generally attached; and O is the back brace having one end secured to the under side of the rear end of the beam at a, and having its front end passing between the branches of the foot B, to which they are connected by means of the pivot-bolt b. The branches of the foot B are suitably bent and spread apart at their upper end to receive the beam A between them, and a bolt, (Z, passing through the upper end of said branches and above the beam B, keeps these parts united. W hen a horse or team is pulling the plow and its shovel is in engagement with the soil, the tendency of the bolt (1 is to press upon the top of the beam, and, as it is sometimes necessary or desirable to change the angle formed by the lower end of the foot or its shovel with the ground, a plate provided with open-top transverse serrations or flutes (nearly similar to the lower half, E of Fig. 2) is secured to the top of the beam to receive the bolt (1 in one of its flutes.

All the above-described parts have heretofore been in use; but I found that no reliability could be placed upon an open-top fluted plate to keep the foot at a proper angle or its bolt in the flutes after the shovel is lifted off the ground. If the plowman-suddenly lets fall the plow or presses upon its handles or rear end, the foot 13 will rotate upon its pivot b and the bolt (Z skip rearward over one or more of the flutes and even over the rear end of the fluted plate. To remedy this defect, Iprovide the beam with a closed-top bolt-retaining plate. oraplatehavingits fluted top sufflcientlyclosed to prevent a bolt passing therethrough from jumping out of the flutes or perforations made transversely therethrough. This plate is shown at E in Fig. 1. It is secured to the top of the beam by bolts or screws f, passing therethrou gh at each end and entering said beam. It has a closed top and serrations or flutes e in its under side, through one of which is passed the bolt (1, that unites the upper end ofthe branches of the foot B. This is the form of plate that I prefer, as it fulfills the requirements for which it is made; but as it may be regarded as objectionable for the bolt (Z to indent the upper surface of the beam under the flutes e, I may also use the fluted plate in connection with the closed-top plate E, as shown in Fig. 2; or, if the two plates E E are cast at the same time and in close contact, Iobtain the bolt-receiving plate shown in Fig. 3 at E having perforations e for the passage of the bolt d,- but to facilitate the casting of said plate with the perforations e therein cores may be needed, and to facili tate their retention at uniform distances apart they may be united together at the side by narrow strips,which will leave openings 6" in the top of the plate E; but as these openings are much narrower than the body of the bolt (1 to be received in the cylindrical cored openings, the top of said plate IE will be closed against the escape of the bolt from its cylindrical openings, and will fulfill the requirements of my invention.

The modification shown in Fig. 5 is preferably made of a sheet-metal strip corrugated to present bolt-receiving flutes either above or under its surface. The top plate in' Fig. 6 is ICU also made, preferably, of wrought metal, and its bolt-receiving flutes slightly larger than in Fig. 2.

Although the plate having a series of llutes or perforations is shown applied to the top of the beam, it may also be applied to the bottom of the beam to adjust the angle made by the foot B with the beam.

Having now fully described my invention, I clairn- 1. The combination ofa plow-beam, its foot, and transverse bolt with a plate having a series of transverse flutes or openings, and a closed top above said flutes parallel with the top of said beam and secured thereto, substantially as and for the purpose described.

presence of two witnesses.

THADDEUS W. .fiOYLE.

Witnesses:

'lnos. Ill. GoLDsL-r,

L. S. BIGNON. 

